Find flights
Deals
When to book
FAQs

Cheap flights from Seattle to Denver from £58

SEA — DEN
9 Oct — 16 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Denver

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Denver

Tue 27/1010:13 -
Nonstop2h 55m
Tue 27/1017:57 -
Nonstop3h 01m
Deal found 6/9£112
Sat 3/1016:27 -
Nonstop2h 54m
Tue 6/1022:49 -
1 stop11h 53m
Deal found 8/9£112
Thu 22/1016:27 -
Nonstop2h 50m
Thu 29/1018:42 -
1 stop16h 03m
Deal found 7/9£113
Thu 1/1020:00 -
Nonstop2h 47m
Sun 4/1006:00 -
Nonstop2h 59m
Deal found 7/9£116
Tue 10/1108:30 -
Nonstop2h 47m
Sat 14/1113:14 -
Nonstop3h 11m
Deal found 8/9£117
Sat 24/1018:54 -
Nonstop2h 43m
Sun 25/1007:07 -
Nonstop3h 03m
Deal found 4/9£117
Tue 6/1020:15 -
1 stop12h 17m
Tue 13/1013:07 -
Nonstop3h 05m
Deal found 9/9£120
Tue 20/1015:30 -
Nonstop2h 45m
Tue 27/1017:20 -
1 stop5h 25m
Deal found 5/9£120
Fri 6/1120:00 -
Nonstop2h 55m
Sun 8/1105:25 -
1 stop4h 45m
Deal found 8/9£123
Sat 24/1006:15 -
Nonstop2h 40m
Wed 28/1008:50 -
2 stops7h 05m
Deal found 6/9£124
Sat 24/1014:30 -
1 stop6h 22m
Sun 25/1006:00 -
Nonstop3h 10m
Deal found 4/9£125
Sat 24/1006:15 -
Nonstop2h 40m
Sat 24/1012:30 -
2 stops10h 10m
Deal found 7/9£127

Find flight deals from Seattle to Denver

Round-trip from

£112

One-way from

£58

Popular in

June

Cheapest in

January

Average price

£201
Alaska Airlines
  • Alaska Airlines
  • 27/10-27/10
  • Nonstop
  • 5h 56m total
  • Seattle to Denver
Search Deals
United Airlines
  • United Airlines
  • 13/10-31/12
  • Nonstop
  • 2h 45m total
  • Seattle to Denver
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (£34 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£5 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Seattle to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SeattleDenver

SEA Seattle/Tacoma Intl - DEN Denver Intl

SEADEN

Seattle/Tacoma Intl

Tue 17/11

19:59-23:47

Nonstop2h 48m

Denver Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

£58
Fastest return journey

SeattleDenver

SEA Seattle/Tacoma Intl - DEN Denver Intl

SEADEN

Seattle/Tacoma Intl

Tue 19/1

15:51-19:35

Nonstop2h 44m

Denver Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

£58

SeattleDenver

SEA Seattle/Tacoma Intl - DEN Denver Intl

SEADEN

Seattle/Tacoma Intl

Thu 29/10

20:00-23:55

Nonstop2h 55m

Denver Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

£58

SeattleDenver

SEA Seattle/Tacoma Intl - DEN Denver Intl

SEADEN

Seattle/Tacoma Intl

Tue 10/11

19:59-23:47

Nonstop2h 48m

Denver Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

£58

SeattleDenver

SEA Seattle/Tacoma Intl - DEN Denver Intl

SEADEN

Seattle/Tacoma Intl

Mon 23/11

12:20-21:27

1 stop8h 07m

Denver Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

£62

SeattleDenver

SEA Seattle/Tacoma Intl - DEN Denver Intl

SEADEN

Seattle/Tacoma Intl

Sat 3/10

16:15-22:45

1 stop5h 30m

Denver Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

£66

SeattleDenver

SEA Seattle/Tacoma Intl - DEN Denver Intl

SEADEN

Seattle/Tacoma Intl

Fri 16/10

17:10-00:45

1 stop6h 35m

Denver Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

£66

SeattleDenver

SEA Seattle/Tacoma Intl - DEN Denver Intl

SEADEN

Seattle/Tacoma Intl

Sat 31/10

09:42-16:56

1 stop6h 14m

Denver Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

£66

SeattleDenver

SEA Seattle/Tacoma Intl - DEN Denver Intl

SEADEN

Seattle/Tacoma Intl

Mon 18/1

06:05-15:56

1 stop8h 51m

Denver Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

£66

SeattleDenver

SEA Seattle/Tacoma Intl - DEN Denver Intl

SEADEN

Seattle/Tacoma Intl

Mon 8/3

23:53-10:12

1 stop9h 19m

Denver Intl

Wed 31/12

00:00-23:00

Nonstop0h 00m

£66

Flights are sorted by cheapest return flights first.

Deals found on 4/9

Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Seattle to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Seattle with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from Seattle to Denver

How far ahead should I book a flight from Seattle to Denver?

The price you pay for your flight from Seattle to Denver may vary depending on when you book. For the best chance of a lower fare, look to book 73 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Seattle to Denver?

Currently, January is the cheapest month in which you can book a flight from Seattle to Denver (average of £118). Flying from Seattle to Denver in June is currently the most expensive (average of £249). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to DEN?

One of the essential ways to save on airfare from Seattle to Denver is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 63% on airfare.

How much does it cost for a return flight from Seattle to Denver?

Airfare is below average for this route at the moment.

Seattle to Denver flights typically cost between £129 and £253 in October.
The cheapest return price found within the last 5 days was £112 on Alaska Airlines (27 Oct–27 Oct).

Related info for your journey

  • How popular is this Seattle to Denver flight route?

    Flights from Seattle/Tacoma Intl to Denver Intl have been viewed 3 times in the past calendar month.

  • How long is the flight from Seattle to Denver?

    Departing from Seattle to Denver will take you 2h 50m. The distance between Seattle and Denver is about 1022 mi. All flights are typically direct.

  • What are the most reliable airlines from Seattle to Denver?

    No one likes to see their flight delayed. When booking a flight from Seattle to Denver consider choosing Copa Airlines (77%), Qatar Airways (77%) or United Airlines (76%) as they are the most reliable in getting you off to your destination on time.

  • Can I find deals for flights from Seattle to Denver that include hotel bookings?

    Yes. In addition to deals on Seattle to Denver flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Denver?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Denver.

  • Can I find deals for business class flights from Seattle to Denver?

    Yes. Cheapflights offers flight deals from Seattle to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Denver?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Denver (average of £118). Flying from Seattle to Denver in June is currently the most expensive (average of £249). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Fly with Cheapflights

How does Cheapflights help users find flights from Seattle to Denver?

Cheapflights makes it easy to find Seattle to Denver flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Denver?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Denver from Seattle.

Can Cheapflights find flights from Seattle to Denver with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Seattle to Denver flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Seattle to Denver become cheaper?

Of course! You can now track prices for flights from Seattle to Denver and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.